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Gels
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Recent Advances in Aerogels (2nd Edition)
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Recent Advances in Aerogels (2nd Edition)

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Chemistry and Physics".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 2349

Special Issue Editors

Dr. Uroš Maver

E-Mail Website
Guest Editor
1. Institute of Biomedical Sciences, Faculty of Medicine, University of Maribor, Taborska Ulica 8, SI-2000 Maribor, Slovenia
2. Department of Pharmacology, Faculty of Medicine, University of Maribor, Taborska Ulica 8, SI-2000 Maribor, Slovenia
Interests: biomaterials; pharmacology; drug delivery systems; regenerative medicine; tissue engineering; aerogels
Special Issues, Collections and Topics in MDPI journals
Dr. Gabrijela Horvat

E-Mail Website
Guest Editor
Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
Interests: aerogels; polysaccharides; drug delivery; tissue engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are grateful to all authors, reviewers, and readers for their responses to the first edition of our Special Issue on “Recent Advances in Aerogels”. You can access these articles for free via the link:

https://www.mdpi.com/journal/gels/special_issues/advances_in_aerogels

The field of aerogels has seen tremendous growth in recent years. The potential of those materials has been recognized, and they have been used extensively in both research and real-life applications. Even though there are still some disagreements around the definition of aerogels, research on those highly porous materials with high surface areas and other advanced properties is growing exponentially. Disseminations of new findings are mainly focusing on the real-life applications of such materials in drug delivery systems, tissue engineering, insulation, energy storage, and buildings, to name a few. With the development of new routes to aerogel synthesis, some old characterization methods are also being questioned and new ones investigated. New materials from inorganic, organic, and hybrid aerogels are being prepared with unique properties and functionalities. Therefore, we look forward to the submission of new results to this Special Issue on “Recent Advances in Aerogels”. The submission of both theoretical and experimental studies is welcome.

Dr. Uroš Maver
Dr. Gabrijela Horvat
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Gels is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • aerogels
  • characterization methods
  • aerogel application
  • nanomaterials
  • porosity

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Related Special Issue

Published Papers (2 papers)

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Research

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12 pages, 3392 KiB  
Article
Boosting the Capacitance of Covalent Organic Framework Supercapacitors by Hydroquinone Redox Electrolyte Addition
by Laura Sierra, Jesús Á. Martín-Illán, Félix Zamora and Pilar Ocón
Gels 2024, 10(11), 705; https://doi.org/10.3390/gels10110705 - 31 Oct 2024
Viewed by 1035
Abstract
Rapidly escalating energy demands have spurred a relentless quest for innovative materials and methodologies in energy storage technologies. Covalent organic frameworks (COFs) have emerged as promising candidates for energy storage applications owing to their customizable structure and inherent properties, including enduring porosity and [...] Read more.
Rapidly escalating energy demands have spurred a relentless quest for innovative materials and methodologies in energy storage technologies. Covalent organic frameworks (COFs) have emerged as promising candidates for energy storage applications owing to their customizable structure and inherent properties, including enduring porosity and expansive surface area. In this study, we introduce imine-based COF aerogels fashioned into flexible COF electrodes, employing redox electrolytes based on hydroquinone (HQ) dissolved in H2SO4 aqueous solution and 0.25 M TBAPF6 at concentration in acetonitrile. This strategic selection of electrolytes aims to augment capacitance and energy density when compared to non-redox electrolytes. Remarkably, our COF electrodes exhibit an outstanding areal capacitance of 843 mF cm−2 when utilizing HQ with 0.10 M H2SO4, operating at 1.3 mA cm−2, while maintaining approximately 100% capacity retention after 10,000 cycles. Notably, the capacitance of the 0.38 M HQ + 0.10 M H2SO4 is eight times greater than that achieved with organic electrolytes (111 mF cm−2). Full article
(This article belongs to the Special Issue Recent Advances in Aerogels (2nd Edition))
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Review

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21 pages, 9076 KiB  
Review
Characteristics of Polybenzoxazine Aerogels as Thermal Insulation and Flame-Retardant Materials
by Shakila Parveen Asrafali, Thirukumaran Periyasamy and Jaewoong Lee
Gels 2025, 11(2), 121; https://doi.org/10.3390/gels11020121 - 6 Feb 2025
Viewed by 834
Abstract
Polybenzoxazine-based aerogels are a unique class of materials that combine the desirable properties of aerogels—such as low density, high porosity, and excellent thermal insulation—with the outstanding characteristics of polybenzoxazines—such as high thermal stability, low water absorption, and superior mechanical strength. Polybenzoxazines are a [...] Read more.
Polybenzoxazine-based aerogels are a unique class of materials that combine the desirable properties of aerogels—such as low density, high porosity, and excellent thermal insulation—with the outstanding characteristics of polybenzoxazines—such as high thermal stability, low water absorption, and superior mechanical strength. Polybenzoxazines are a type of thermosetting polymer derived from benzoxazine monomers. Several features of polybenzoxazines can be retained within the aerogels synthesized through them. The excellent thermal resistance of polybenzoxazines, which can withstand temperatures above 200–300 °C, makes their aerogel able to withstand extreme thermal environments. The inherent structure of polybenzoxazines, rich in aromatic rings and nitrogen and oxygen atoms, imparts flame-retardant property. Their highly crosslinked structure provides excellent resistance to solvents, acids, and bases. Above all, through their molecular design flexibility, their physical, mechanical, and thermal properties can be tubed to suit specific applications. In this review, the synthesis of polybenzoxazine aerogels, including various steps such as monomer synthesis, gel formation, solvent exchange and drying, and finally curing are discussed in detail. The application of these aerogels in thermal insulation and flame-retardant materials is given importance. The challenges and future prospects of further enhancing their properties and expanding their utility are also summarized. Full article
(This article belongs to the Special Issue Recent Advances in Aerogels (2nd Edition))
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